Improved machine for rolling- hoe-blanks



W. T. CLEMENT & E. V. POSTER.

MAGHIN FOR ROLLING HOB B Patented-Aug. 17, 1869.

duhai iam minti Ghjifire.

WILLIAM T. CLE'MENT AND EDVVARD V. FOSTER, OF NORTHAMP' TON, MASSACHUSETTS;

Letters .Patenz N 93,679, dated August`17, 1869; (mtedatcd, Awgzrst 4, 1809.

IMPROVED MACHINE FOR ROLLING HOE-BLANKS.

The Sohodule raferred to in ths Letter: Patant and making part o! the same..

To all whom it may concem:

Be it known that wc, WLLIAM T. Onnnrm'r and Enwknn V. Fos'rnn, bot-h of Northampton, in the county of Hampshire, in the State of ll/lassaehusetts, have im'ented certain new and useful lmproveincuts in Machines for the llrlanufiictnre of Hoos; and we do hereby declare that the following is a full and exact description thereof.

The hocs to which our invcntion rclates are of the character genemlly known in the tradc as plautcrs' hoes.

' The object of our invention is to fhcilitate the welding and drawing down, or forging of the several surfrces. Machines have been before employed for doing certain portions of this work, and our machine is iutended to perforr'n more of the labor, and to effect that more rapidly-and perfeetly. Oertain portions of the. machine are to be used at one period, and other parts at other pol'inds.

VVe will first deseribe what we consider the best mode of carrying out ourinvention, and will afterward indicate` specifically the points claimed as new.

The accompanyi'ng drawings form a part of this specific'ation.

Figure 1 is an end view, and

Figure 2 is a front view of the machine.

igure 3 is a transverse vertical section on the line Figure 4 is a correspond'ing section on the lnoS S.

Figure 5 is a eorresponding section on the line (BT,

Figures G, 7, and 8, show the bee-blank in different conditions.

Similar letters of reference indicate like parts in all the figures.

A is a' stationary framing of cast-iron, firmly mounted on any suitable support.

B is a roll, supported in bearings in the framing A, geared, or otherwise connccted with a steam-engine, or other motive-power, not reprcscnted.

O is an upper roll, monnted in the same frame, and connected by stout spur-gcars, as represented, with the roll B, so that the two shall turn together.

B1 is a projection on ainoi'crhanging portion of the roll B, and Gi is a -corresponding projection on the correspouding overhanging portion of the roll vG.

lVithin the framingA is a fiat projection, b, on the roll B.

By the. side of this projection is asgrooved projecton, Bz. p

.fhese projeotions :ire faccd with steel., and are accurately shapod, to give the proper form to the metal which is placcd'between thcm.

The rolls B and O are accurately adjusted at a .the eye previously drawn down, or c'ontracted in thiekness by theaid of a trip-hannner, or other means, not neeessary to dcscribe, the first opcmtion is to weld on the steel, which is to form the face or working-portion of the edge.

M is a face of steel, previously forged or workod iu the form representcd, and out oii'in pr'opcr lcngths. v

On heating the blank and the steel, :md coating the surface of oue'or both with horax, or other 1lux,-the steel is laid npon the iron, and both are introdnend together between the rollers O and B. A. period is selected for thus iiiserting the blank and the steel, when the projcction b, on the roller B,'is` in the position indieated in red outliues in lig. 5. When; by the revolntion of the rollortho projection b hrought into .contact with the boo-blank, as shown imblack ontline, it connnenees to compress the steel npon the iron, and, at the' same time, to nmve the iron and steel forward toward the operator, a moifement which is not resisted by the operator, and the two metais are soon thrown flout, pcrfcetly welded together, and rcduced to a uniform thickness. This oporaiion is performed almost instantancously, and without the loss -of much heat.

In Operating with the thinning and idening-portion ofour machine, indicated by i' and C', the metal, which is to form the blade of the hoe., is heated to a bright heat, and is held by the at-tondant,'as indicated in lig. 3. lt is so applied while the projections LB1 and O' are in or near the positions indieatcd by the red out-lines. The revolntien of the rollers B and O brings the projections B* and C' into contact with'the iron in the position iudicated in black ohtline, -commencing to act near the middlc of the bar of iron,and compressing it from thence ontward, toward one edge. The single Operation now described has the e'cct to thin and widen one side of the blank.

The blank is now (lexterously turned over, and its other edge applicd to the machine, and the next revol ution of the rolls'seizes it again near the middle, and thins and w'idens theother side of the blank.

Fg. 6 shows the blank in the form in which itisfirst introduced into thc machine;

Fig. 7 shows it after it has been subjected to one Operation, and with one .side thinned and wvitleiied; while Fig. 8 shows itl after it has been subjected to the succecding Operation, and the other side thinned and widcned.

It now npproxii'nates to the form of the blade of a hoe, being thin gcnerally, but having a ridge along its` centre, which isnot, so much thinned. This ridgc must be earefully preserved during all the subseuent stages, for it fox-ms the well-known strengthening-rih or web of the hoe. v

The object of the next Operation, which is per-- forined in another part of the machine, is to lengthen the blank. In order to do this the lblank must be hold the other way in the rolls, that is, atright angles to the position in which it was'held when it was being drawn in the direction of its Width.

B is a projection firmly fixed on the roll B, at the point reprcsented. It' projects sufficiently to eome nearly in contact .with the plain eylindrical surface of the roll O, except along a line in which the ridge, above refen'ed to, is to be rceeived. To accommodate this rllge, a corresponding groove is for-med, as iudicated, ther groove being deep on the front edge of the projection, and diminishing to nothing therefrom.

"l`o opel'ate this portion of our invention, the blank, or-partially-form'ed hoe, is reheated, if neeessary, in order to obtain the proper temperature. It is then dexterously thrust in between 4the rolls B and G, and held as indicated in fig. 4.

The period selected for thusthrusting in the metal is when the projection B is at or near the position indicated in red outline. When the revolutiou ofthe rolls has brought the projeetion into the position indicated in black outline, the blank is powerfully seized between the projeetion B* and the roll O, and is carried forward toward the operator (a movement to vwhich he opposes little resistance,) and the blank ,is rapidly roiled through its whole length and properly extended. If a single operation should not effect this to the satisfaction ofthe operator, he again thrusts The dotted outline in fig. 8 indicates the form of the blank, when it has been subjected to the final operation of this niaehinery. The subsequent operations :irc performed by hand, or by other maehinery. lt is not absolutely neeessaly that the widening'- (lil-s B' C'be overhung. `We can acc-ompllsh the work with the bearinfgs and housing's outside of the said (lies, but they :ne more in the way in that position.

It must be relnarkcd that it is an important feature of our inveution that the dics'b B' O' Bz are all so formed as to give a taper to the thiekness o'f the blank, which is worked therehy. It is necessary to leave the edge of thehoe thin, and to taper it gradually backward, so as to give a thickness about twce as great at the back as that nearthe edge. lt is diliicult to inake this feature properly apparent inrsniall drawings, because the-Wedge, or volute form of the surface, if represented suflieiently great to be apparent, would be much greater than is actually allowable. W'e have indicated in red outline the positions of the snri'aces' so exaggerated.

Having now fully' described our invention,

What we claim as new, and desire to secure by Letters Patent, is as follows:

il. We elaim, in' combination with revolving rolls B O, the construction of the projecting dies B' G', together with their arrangement on the pmjectin g orioverhan gin g portions of the revolringrolls, as'deseribed, said dies being adapted for spreading the blanks iaterally in the manner described. v

2.l W'e claim, in combination with revolving rolls B O, the construction of the projeeting dies B* b, together with their ammgcment on the revolving rolls, as described, said dies being adapted for diawing the blank, and giving form to the central rib on thesurfaee of the hoe, in the manner described.

3. We claim the combination and ariangement of the dies,B', G', B2, and'b, on the coiitinuously-revolving rolls B O, to form a machine adapted to perlbrm all the several Operations required simultaneously or vSuccessively, suhstantially as'herein set foith.

WM T. OLEMENT. EDWARD V. FOSTER. Witncsses:

O. A MAYNARD, W. R. HOLLIDAY 

